Abstract: The ecological environment of dry hot valley in Jinsha River is very fragile and difficult to rehabilitate its vegetation. With the ?method of field survey and comprehensive analysis, the typical dry hot valley at the Qiaojia County in Yunnan province, was taken as an example to study the site type and its vegetation resources. The Qiaojia dryhot valley region was divided into 1 site subarea, 2 site type groups and 8 site types. By means of investigating vegetation types and plant species, 25 plants suitable for rehabilitation were chosen, which were rationally collocated with different site types to provide scientific basis for the vegetation rehabilitation and ecological construction at Qiaojia County.

Key words: Qiaojia , dryhot valley , site type , vegetation